基于基尼系数优化熵权-TOPSIS法的排水权初始分配研究

Initial allocation of drainage rights based on optimization of Gini coefficient and entropy weight-TOPSIS method

借鉴现有稀缺资源的研究方法,对流域内区域间初始排水权配置的基本原则及影响因素进行分析,构建排水权初始配置的指标体系,采用熵权-TOPSIS法对流域内区域间的排水权进行初次分配,结合基尼系数法,对排水权的初次分配结果进行优化。应用本文方法对苏南运河排水权初始分配进行算例分析,结果表明:未经基尼系数约束优化前,基于人口、GDP、区域内水域面积和年降雨量4个指标的基尼系数除了年降水量指标外均接近0.4,处于不公平的区间附近,经基尼系数约束优化后,各指标基尼系数值均小于或等于0.3,处于相对公平区间内,且年降雨量指标也由优化前的0.2降低至0.08,处于绝对公平区间内。

The basic principles and influencing factors of the initial allocation of drainage rights in a basin is analyzed using the existing scarce resource research methods.An index system for the initial allocation of drainage rights is established,and the entropy weight-TOPSIS method is used for the initial allocation of the drainage rights between regions in the basin.The results of the initial allocation of rights are optimized based on the Gini coefficient method.Finally,a calculation example is analyzed for the initial allocation of the drainage rights of the Sunan Canal.The results show that before the optimization of the Gini coefficient,the Gini coefficients of the indices of population,GDP and water area in the region are all close to 0.4 except the Gini coefficient of annual precipitation index,which is near the unfair interval.After the Gini coefficient constraint optimization,the Gini coefficients of various indices are less than or equal to 0.3,which is in a relatively fair interval,and the Gini coefficient of the annual rainfall index is also reduced to be 0.08 from 0.2 before optimization,which is in an absolutely fair range.